Product Specification

PE9763

Page 3 of 15

Document No. 70-0140-01

│ www.psemi.com

©2005 Peregrine Semiconductor Corp. All rights reserved.

Pin No.

Pin

Name

Valid

Mode

Type

Description

16

Direct

Input

K Counter bit7.

17

Direct

Input

K Counter bit8.

18

Direct

Input

K Counter bit9.

19

Direct

Input

K Counter bit10.

20

Direct

Input

K Counter bit11.

21

Direct

Input

K Counter bit12.

22

Direct

Input

K Counter bit13.

23

Direct

Input

K Counter bit14.

24

Direct

Input

K Counter bit15.

25

Direct

Input

K Counter bit16.

26

Direct

Input

K Counter bit17 (MSB).

27

(Note 1)

(Note 1)

28

GND

Downbond

Digital core ground.

GND

Downbond

ESD ground.

29

Direct

Input

M Counter bit0 (LSB).

30

Direct

Input

M Counter bit1.

31

Direct

Input

M Counter bit2

32

Direct

Input

M Counter bit3.

33

Direct

Input

M Counter bit4.

S_WR

Serial

Input

Serial load enable input. While S_WR is “low”, Sdata can be serially clocked. Primary register

data are transferred to the secondary register on S_WR or Hop_WR rising edge.

34

Direct

Input

M Counter bit5.

SDATA

Serial

Input

Binary serial data input. Input data entered MSB first.

35

Direct

Input

M Counter bit6.

SCLK

Serial

Input

Serial clock input. SDATA is clocked serially into the 20-bit primary register (E_WR “low”) or

the 8-bit enhancement register (E_WR “high”) on the rising edge of Sclk.

36

Direct

Input

M Counter bit7.

37

Direct

Input

M Counter bit8 (MSB).

38

Direct

Input

A Counter bit0 (LSB).

39

Direct

Input

A Counter bit1.

E_WR

Serial

Input

Enhancement register write enable. While E_WR is “high”, Sdata can be serially clocked into

the enhancement register on the rising edge of Sclk.

40

Direct

Input

A Counter bit2.

41

Direct

Input

A Counter bit3 (MSB).

42

DIRECT

Both

Input

Direct mode select. “High” enables direct mode. “Low” enables serial mode.

43

Pre_en

Direct

Input

Prescaler enable, active “low”. When “high”, Fin bypasses the prescaler.

44

(Note 1)

45

GND

Downbond

Digital core ground.

GND

Downbond

ESD ground.